Composition of the oil fraction of products of hydrothermal-catalytic conversion of asphaltite of the Spiridonovskoye field Available to Purchase

Liquid products with a low content of resins and asphaltenes are resulted from the hydrothermal-catalytic conversion of solid natural asphaltite of the Spiridonovskoye deposit (Republic of Tatarstan) at 250 °C in the presence of hematite. In this case, a dispersed phase of insoluble carbonized substances such as carbenes and carboides is observed among the conversion products. Based on the results of IR, ¹H NMR and GC-MS analysis oils of liquid conversion products are enriched with aromatic, polycycloaromatic, carbonyl-containing structural fragments and sulfoxides. The sets of compounds in the oils of the initial asphaltite and its conversion products are almost similar but changes in the relative content of compounds of various types are observed. The products of conversion exhibit a dramatic increase in the relative content of alkanes and noticeable increase in content of tri- and tetracyclic aromatic hydrocarbons and dibenzothiophenes. Alkylcyclohexanes, which are lacking in the initial asphaltite are also identified. However, the relative content of polycyclic naphthenes (pregnanes, steranes, heilanthanes, and hopanes) has decreased markedly. The revealed differences are apparently due to the yield in these compounds resulted from the destruction of resins and asphaltenes and adsorbed and/or occluded components.